baber/WOPTO huggingface dataset:
Patent GB-688887-A (GB)
Title: Impact fuze for rocket projectiles
IPC: F42C15/24
Filed: 1951-07-20
Abstract: 688,887. Projectile fuzes. VERWALTUNGSGES DER WERKZEUGMASCHINENFABRIK OERLIKON. July 20. 1951 [July 31, 1950], No. 17271/51. Class 9(i) An impact fuze for a rocket projectile has a body 1 adapted to be screwed into the nose.of the projectile and is attached by screw-threading to a primer carrier 7. In a longitudinal bore is a spring-held striker pin 2 with a stepped head 3 of hard material, e.g. tungsten carbide. The striker pin 2 is itself bored to receive a sleeve 5 into which extends a percussion pin 8. An inclined bore in the striker pin extends to the sleeve and accommodates a ball 6. Before impact the percussion pin 8 is prevented by a transverse safety pin 9 from entering the primer 11, and if at impact the velocity of the projectile is low, the striker pin moves too slowly to affect the percussion pin. So that, the striker pin returns to its initial position with the fuze unaffected by the impact. If the striker pin bears against a plug 10 any further pressure on the pin will rupture the fuze body at a weakening 1a and render ignition impossible. If the projectile strikes. a target at high speed; the pin 2 is thrown rearwards at high velocity while the ball 6 slides forwardly in the oblique bore and deforms the sleeve 5, Fig. 2. Then during further forward movement of the striker pin the deformation containing the ball 6 strikes against the percussion pin 8, the safety pin 9 is sheared and the primer 11 initiated.
Patent GB-1366469-A (GB)
Title: Fluid pressure regulator
IPC: G05D16/06
Filed: 1972-04-14
Abstract: 1366469 Valves SCANS ASSOCIATES Inc 14 April 1972 [30 April 1971] 17314/72 Heading F2V  A fluid pressure regulator comprises an inlet 27 and outlet 29, a diaphragm 9 having one face exposed to controlled fluid in a chamber 5 and the other face exposed to fluid at a constant pressure in chamber 6, the diaphragm being connected to a valve member 19 so that a constant pressure is maintained downstream of the valve. Passages 28 in the housing and 37 in the valve member enable air to be purged from behind the valve member. Vents 36, 36a and vent plugs 45, 46 allow air to be expelled from the valve. The valve member 19 includes a tear-drop shaped sealing ring (23) (Fig. 4, not shown).
Patent GB-1448434-A (GB)
Title: Steam and vacuum cleaning apparatus
IPC: A47L11/38
Filed: 1975-04-25
Abstract: 1448434 Cleaning carpets upholstery walls ceilings and floors STEAM VACUUM EXTRACTION Ltd 25 April 1975 17323/75 Heading A4F Cleaning apparatus comprises a steam or water vapour generating unit and a suction generating unit, each having a tank 2 or 3, and means for applying steam or water vapour and suction from these units to a hand tool (not shown), the units being mounted on a single trolley with the tanks 2, 3 within a rigid frame 1 of which the lower part confines pumps 21, 22 and pump driving means of the units, the suction generating unit tank 3 being mounted above the pumps 21, 22 and the water tank 2 extending downwardly beyond the tank 3 into the lower part of the frame. The water tank 2 contains an electric immersion heater 6 and is connected to the pump 22 which has an outlet 27 for connection by a flexible hose to the hand tool. A separate inlet pipe 35 provided for the pump 22 enables different cleaning fluids to be supplied to the tool when required. The tank 3 has an inlet pipe 23 and is connected to the pump 21 which incorporates a driving motor.
Patent GB-439690-A (GB)
Title: Improvements relating to draw-out type electric switchgear
IPC: H02B11/28
Filed: 1934-06-12
Abstract: 439,690. Switchgear structures. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, and REGIS, E. D., 43, Tanfield Avenue, Cricklewood, both in London. June 12, 1934, No. 17399. [Class 38 (v)] In metal-clad switchgear of the duplicate bus-bar draw-out type, a hinged link or isolator 17a, 17b is pivoted to each of the circuitbreaker terminals 3a, 3b, each link being adapted selectively to engage either a contact 8a, 8b connected to a bus-bar 7a, 7b or a contact 11a, 11b connected to a feeder cable terminal 16. The isolators are housed in a casing 1 divided into two portions A, B by a partition 2, with separate compartments 6a, 6b for the bus-bars. The contacts 11a, 11b are interconnected by a link 12 in a separate casing 15 which may also house a current transformer. By means of the links 17a, 17b, the feeder 14 may be connected to either set of bus-bars, or the feeder may be isolated, and the busbars interconnected through the circuit-breaker. Interlocking devices are provided for preventing withdrawal of the circuit-breakers 5 except when the links are disconnected from the bus-bars. Earthing contacts 20a, 20b may also be provided, with which the links may be engaged when the circuit-breaker is to be withdrawn.
Patent GB-876994-A (GB)
Title: Improvements in or relating to negative feedback circuits
Inventor: COOMBS FREDERICK LESLIE
IPC: H03G1/00
Filed: 1958-05-30
Abstract: 876,994. Volume control. BRITISH BROADCASTING CORPORATION. April 8, 1959 [May 30, 1958], No. 17436/58. Class 40 (4). [Also in Group XL (c)] A transistor amplifier of variable gain comprises a transistor T1 in grounded emitter connection having a second transistor T2 connected in its emitter lead and functioning as a controllable resistance giving variable negative feedback. The base of the transistor T2 is connected via resistor R3, across which the gain control potential is produced, to a point on a bias potentiometer R4, R5 which together with the potentiometer R1, R2 biasing the base of the transistor T1, determines the static conditions of the arrangement.
Patent GB-1023394-A (GB)
Title: Improvements in or relating to floor cleaning liquid pick-up devices
Inventor: BRIDGE SAMUEL DOUGLAS
IPC: A47L11/29
Filed: 1964-04-27
Abstract: 1,023,394. Squeegees. R. G. DIXON & CO. Ltd. Jan. 12, 1965 [April 27, 1964], No. 17450/64. Heading A4F. A squeegee lip 12 of natural or synthetic rubber for a floor cleaning liquid pick-up device comprises a body portion 13 formed with a flange 14 and integral end webs 15. The flange and webs of the lip are arranged to engage around metal strips 10 having end flanges 11 and, as shown, a pair of lips are so mounted and adapted to be inserted into the mouth of a suction nozzle 18. The sandwich-like assembly is retained in the nozzles by means of screws and knurled nuts. The webs may be of triangular shape.
Patent GB-1068389-A (GB)
Title: Improvements in and relating to optical systems of the schmidt type
Inventor: BRAITHWAITE ERIC
IPC: G02B17/08
Filed: 1964-04-27
Abstract: 1,068, 389. Reflecting objectives. SIR HOWARD GRUBB PARSONS & CO. Ltd. April 27; 1965 [April 27, 1964], No.17451/64. Heading G2J. A reflecting objective suitable for photographing simultaneously a star and an artificial satellite and covering a spectral range of 4, 00-7, 000 Angstroms comprises a concave mirror 3, a correcting plate 1, lying at a distance from the mirror greater than its focal length, an aperture stop 2 and a positive multi-component field flattening lens 4 located adjacent the focus 5 of the mirror, the plate 1 and mirror 3 providing between them at least one aspheric surface having a profile defined by the equation x = A1y<2> + A2y<4> + A3y<6> + A4y<8> + A5y<10>. If, as shown, a multicomponent correcting plate 1 is used there may be only one aspherical surface, as on the front surface of component 1a. Alternatively two or three aspherical surfaces may be provided. Optical data are provided for five examples in two of which the correcting plate 1 is formed by a single component.
Patent GB-728421-A (GB)
Title: Improvements in or relating to sheet binding machines
IPC: B25C5/02
Filed: 1953-06-24
Abstract: 728,421. Punching-machines. GENERAL BINDING CORPORATION. June 24, 1953 [Jan. 7, 1953], No. 17489/53. Class 31 (2). [Also in Group XV] A machine for binding a stack of sheets with a binding element having resilient curled fingers comprises a plurality of punches for piercing a stack of sheets and means for opening the curled fingers, the means for operating the punches and for uncurling the fingers being operated by reverse operation of a single operating lever. The machine 10 comprises a base plate 11 having a flat forward end portion, along which sheets may be slid to be punched, with a slot 12 transversely thereof for a side sheet aligning gauge. A cover 15 is provided for the punches and uncurling device, the side 18 of which has a boss 20b for rotatably receiving a shaft 21 having an operating handle 22 secured thereto by a pin 23. A die plate 24, having rectangular die apertures 25, is recessed in the base plate 11 inwardly of the front wall 19 of the casing which terminates in spaced relation with the base 11, and co-operates with rectangular die punches 26 vertically guided in a die holder and stripper 29, the stripper plate 30 of which is mounted on a spacer block 31 on the base 11, the plate 30 having apertures corresponding to die apertures 25. The guide plate 34, apertured to receive the punches 26, is secured to the upper end of a spacer block 33 on the plate 30, the punches 26 being biased to the retracted, upper position by means of individual compression springs 35 surrounding each punch and interposed between the plate 30 and a pin 36 through the punch 26. The punches 26 are operated, to perforate sheets engaging the side gauge in slot 12 and a back gauge 108, by a rocking pressure bar 37 pivotally mounted in the upper ends of rocking bars 39 by pivot pins 40, the lower ends of the links 39 being pivoted by pins 43 to brackets 41 extending each side of the base 11. The bar 37 is rocked from a shaft 53, rotatably mounted in the brackets 41 and pivoted by shaft 21 and handle 22, by cams 47 and 51 thereon having crank pins 50, 52 on which are pivoted links 45 connecting the cams with the lower ends of rocking arms 44 mounted on the pivot pins 40 inwardly of the rocking links 39. The pressure bar 37 has a shouldered arcuate recess 55 engaging the top, rounded, ends 57 of the punches 26 so that the pressure arm 37 can also pivot about the top ends 57 when the rocking arms 44 are operated by rocking of the cams 47, 51, the links 39 being rocked also so that the bar 37 exerts a vertical component of force to move the punches 26 through guide plate 34 and pierce the sheets. The connection between shaft 53 and shaft 21 may be by tongue and slot 60 with an encircling collar 61 so that the handle 22 and shaft 21 may be stored along the base. Locating pins may be provided to one side of the base where a series of punchings are required on the one set of sheets.
Patent GB-404681-A (GB)
Title: Improvements in supplying thread under extension, for example in covering machines
IPC: B29D99/00
Filed: 1932-06-21
Abstract: 404,681. Delivering extensible thread uniformly, for example, to covering- machines. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, London, MURPHY, E. A., and JAMES, R. G., Fort Dunlop, Birmingham. June 21, 1932, No. 17506. [Class 120 (ii).] To maintain a supply of thread composed wholly or partly of rubber at constant extension, for example in covering machines, the thread is drawn from a braked supply bobbin 2 through rollers 6, 7 and 8, 9 and passes in a bight around a displaceable load, such as a pulley 15, over or between idler pulleys 17 to undergo subsequent operations, such as covering. The pulley 15 is loaded to give the necessary extension and is connected to a lever device 18, 23 which, upon any variation in the extension resulting in displacement of the pulley 15, moves the thread in the nips of the rollers 6, 7 and 8, 9. The rollers 6, 7 travel faster and the rollers 7, 8 slower than the normal speed of delivery, and the pairs are reversely coned as shown in Fig. 2, the coned surfaces terminating in grooves 12, so that upon increase in extension the thread is moved into the nip of the rollers 6, 7 and upon decrease into the nip of the rollers 8, 9.
Patent GB-643866-A (GB)
Title: Improvements in and relating to the construction of concrete roof constructions for buildings
IPC: E04C3/20
Filed: 1947-07-03
Abstract: 643,866. Concrete roof construction. BERK, F. V. July 3, 1947, No. 17527. [Class 20(iv)] A roof construction comprises a series of concrete girders 1 provided with reinforcements 5, 6 and having trough shaped walls fluted on the inside. The girders are supported on a ridge beam 2 and on the walls 3 of the building. The ends of concrete slabs 8 rest on the edges of the girders, the walls of these being cut away to form recesses 8a. The longitudinal side edges of the slabs 8 are sloped and fluted providing V-shaped recesses to contain metal reinforcing rods 11 with hooked shaped ends 12 extending into the trough 4. Grouting is filled into the recesses 10 and troughs 4 so that a series of T-shaped units 13 are formed integrally connected to the slabs and girders. Girders are secured at the roof ridge by a reinforcing rod 11a. In the case of a steeply pitched roof the girders are arranged horizontally as purlins, the concrete slabs extending spanwise of the roof with ends resting on the purlins which have walls of different height to conform with the slope of the roof. A metal cap with a projection which is embedded in the grouting before it is set is preferably used. Thermal insulating plaster boards may be nailed by means of a dowel batten 21 to the girders.
Patent GB-686299-A (GB)
Title: An improved clamping gland for armoured electric cable
IPC: H02G3/06
Filed: 1951-07-26
Abstract: 686,299. Mechanical couplings for cable armouring or sheathing. HAWKE, W. July 26, 1951, No. 17715/51. Addition to 666,004. Class 38 (i). The tubular body of a cable clamping gland according to the parent Specification is made in two parts B, C, one end of the part C being internally screw-threaded at c<SP>2</SP> to receive an end of the portion B which is externally screwthreaded at b<SP>2</SP> and has a tapered internal surface b<SP>5</SP> co-operating with a tapered sleeve D of ductile metal. The screwing together of the parts B, C compresses said sleeve D axially between a shoulder C<SP>4</SP> on the part C and the tapered surface b<SP>5</SP> and contracts it on to the metal sheath of the cable core f<SP>2</SP> whereby connection is established between said sheath and a fitting into which the part C screws.
Patent GB-695917-A (GB)
Title: Improved clutch control mechanisms for motor-cycles, automobiles and like road vehicles
IPC: B62M25/00
Filed: 1951-07-26
Abstract: 695,917. Bowden mechanism for operating clutches. HOSKINS, J. B. July 26, 1951, No. 17732/51. Classes 80 (ii) and 80 (iii). [Also in Group XXXI] In a clutch control mechanism for motorcycles, automobiles and like road vehicles of the kind in which release and engagement of the drive is effected by a Bowden cable, a spring 12 and washers 13, 14 are interposed between the end 15 of the sheath 16 of the cable remote from the point of control and a part 10 of the engine casing through which the cable 8 passes to the clutch actuating lever 7. The clutch 5 of a motor-cycle (Fig. 1) is released by a push rod 6 connected to the lever arm 7. The washer 13 is welded to the post 10 and the washer 14 is floating and abuts the stud 15. In a clutch control mechanism for an automobile (Fig. 2) a clutch pedal is attached to a lever 17 pivoted at 18 to a crank 19 which is pivotally mounted at 20. A cable 22 is attached to the lever 19 at 21 and passes through two plates 23, 24 fixed to the frame of the automobile. The nipple 25 on the other end of the cable engages in a seating in a crank 26 which pivots about a fulcrum 27. A spring 28 is mounted about the cable 22 between washers 29, 30, the latter being welded to the plate 24. The crank 26 is mounted at 34 for sliding movement adjacent the end of the clutch lever connection 35 mounted on a splined clutch-actuating shaft 36.
Patent GB-173001-A (GB)
Title: Improvements in and connected with the supply of fuel to diesel and semi-diesel engines
IPC: F02M61/00
Filed: 1920-06-29
Abstract: 173,001. Franks, E. A., and Hansen, S. W. June 29, 1920. Cylinders receiving liquid fuel.-The jet of fuel as it enters the cylinder at very high pressure induces air through a surrounding pipe b either from the atmosphere or from the cylinder through a port uncovered by the piston.
Patent GB-572477-A (GB)
Title: Improvements in or relating to electrical switchgear
IPC: H01H1/16
Filed: 1943-10-28
Abstract: 572,477. Snap-action switches ; contacts. HOPE, V. Oct. 28, 1943, No. 17779. [Class 38 (v)] In switch fuses and other switches provided with spring-pressed abutting contacts to ensure easy and accurate engagement with the fixed contacts, the moving contact-carrier carries two contacts 11, 12 each consisting of a blade 18 which slides with limited universal movement, against the action of a spring 22, in a hole in the carrier, and a contacting portion with an arcuate contact face. In the form shown the contacting portion consists of two cadmiumplated discs 19 fixed on either side of the blade 18 and the latter terminates in a strap 17 embracing the cartridge fuse 13. Specification 511,288 is referred to.
Patent GB-1063729-A (GB)
Title: Improvements in or relating to the chlorination of polymers
Inventor: HAMBLING JAMES KEITH
IPC: C08F8/20
Filed: 1965-04-28
Abstract: Sulphur vulcanizable amorphous polymers are prepared by reacting polymers of 4-methyl pentene-1, dissolved in an aromatic solvent, with chlorine at 20 DEG  to 140 DEG  C., said polymers having been prepared by polymerization in the presence of a cationic catalyst at -60 DEG  to -120 DEG  C.  The preferred solvents are benzene, chlorobenzene and o-dichlorobenzene.  In an example 4-methylpentene-1 is polymerized at -85 DEG  C. in the presence of aluminium trichloride and the product is chlorinated in chlorobenzene in the presence of light from a tungsten lamp.  The chlorinated polymer is compounded with carbon black, zinc oxide, stearic acid, tetramethyl thiuram disulphide, benzothiazyl disulphide and sulphur, and vulcanized.
Patent GB-302555-A (GB)
Title: Improvements in rotary pumps of the fixed abutment type
IPC: F04C14/26
Filed: 1928-06-20
Abstract: 302,555. Hall, S. Z. June 20, 1928. Fixed-abutment type having outwardly sliding vanes; compensating for irregularity of flow.- Radially sliding vanes c are pivotally connected to arcuate sliding pieces d<1> in annular grooves in the end walls. The casing at the abutment is bored to the same radius as the rotor to give a broad seal and the grooves and pieces d<1> hold the vanes from contact with this seal. Sharp edges m are formed at the ends of the seal to remove any dirt from the rotor. Wearing pieces z, Fig. 4, may be fitted at the sides of the vane slots in the rotor. Constant delivery pressure is obtained by means of a valved bye-pass between the suction and delivery. The valve is in the form of a closed cylinder p and has a coned seating q and several ports v at different levels. The valve is loaded by a weight s<1> and its movements are damped by means of a fixed piston u.
Patent GB-515961-A (GB)
Title: Improvements in or relating to chamber ovens for producing coke and gas
IPC: C10B21/10
Filed: 1938-06-16
Abstract: 515,961. Coke ovens. OTTO, C. June 16, 1938, No. 17936. [Class 51 (ii)] In a horizontal chamber over for producing coke and gas having heating walls subdivided into vertical heating flues, regenerators disposed below the heating walls and.extending in the longitudinal direction of the heating walls with means for connecting each regenerator with a relatively large number of heating flues, the cross-sectional area of the oven head heating flue and the size of the regenerator section disposed below and arranged to supply the ,head flue, are determined so as to produce a rate of flow of gases in the head flue which is greater than the rate of flow of the' gases in the other flues of the same heating wall, the rate of flow of gases in the regenerator being substantially constant throughout its length. In the oven shown in Fig. 1, -the regenerators 5 are divided into equal sections by partitions 6 corresponding to twin heating flues 3. The head flue 13 is of less longitudinal dimension than the other flues so that the gases flow through it at greater speed. Figs. 3 and 4 show ovens with heating flues 23 connected at the top by flues 20 to corresponding flues in the opposite wall of the oven chamber. The head flue 33, Fig. 3, is of the same longitudinal dimension as the other flues but the regenerator section 35 with which it is connected is longer than the other sections. The head flue 43, Fig. 4, is of shorter longitudinal dimension than the flues 23 but is connected to a regenerator section 45 of the same length as the other sections. The division walls between adjacent regenerators may be provided with metal inserts to prevent leakage.
Patent GB-145718-A (GB)
Title: Improvements in or relating to the mounting of recoil guns in their carriages
IPC: F41A27/08
Filed: 1920-07-02
Abstract: 145,718. Krupp Akt.-Ges., F. Aug. 22, 1918, [Convention date]. Naval and garrison carriages; mounting and dismounting; recoil apparatus.-Consists in means for varying the position of the cradle trunnions to enable naval guns to be mounted on railway mountings with the cradle trunnions near the breech of the gun. In one construction, the cradle is constructed with two pairs of trunnions. In a second construction, one pair of trunnions may be fixed to the cradle in either one of two positions. In a third arrangement, the cradle H, Fig. 7, of a naval gun is reversible, so that the usual trunnions J may be brought nearer to the gun breech, as shown in Fig. 10, for mounting in a railway mounting. The correct position for the trunnion axis is determined by a distance ring N placed on the gun barrel between the cradle and the breech ring M. The recoil cylinder K is reversed in the sleeve h<1>, and the buffer piston rod k<1> is connected to the lug m<1> by an extension rod k<2>. The elevating-gear is connected either to the lug h<2>, Fig. 7, or to a lug n<2> on the ring N, Fig. 10. Specification 127,150 is referred to.
Patent GB-1487911-A (GB)
Title: Tape cassettes and cartridges
IPC: G11B23/087
Filed: 1976-05-03
Abstract: 1487911 Tape cassettes PAMPUS KG 3 May 1976 [10 May 1975] 18033/76 Heading B8M In a tape cassette or cartridge at least one insert provided between the spooled tape and the cassette &c. housing, to minimize friction therebetween and to apply axial force(s) to the spool, is made of paper having polytetrafluoroethylene powder, e.g. 15-20% by weight, and a binding agent, e.g. polyester resin, incorporated, e.g. at the pulp stage, therein. The polytetrafluoroethylene or the paper may contain a substance, e.g. carbon in particle form such as soot or graphite, or a metal oxide, for reducing the electrostatic chargeability of the insert.